The answers to your questions have been featured in this month's Tip.It Times: http://tip.it/runescape/?times=646
Jagex has kindly offered us an interview with their developers about the upcoming Clan Citadels! We want to make sure that your voices get heard so please post any questions you have about the update here! We cannot guarantee that every single question will be answered but Jagex will do their best to pick out some questions to answer

Please make sure your questions are only about Clan Citadels. Other, unrelated questions will most likely not be answered.
WeÂ’ve seen some huge updates this year but, on July 26 2011, we eclipse them all as we reach for the skies and unleash our biggest update of the year so far: Clan Citadels!
Floating high above the land of Gielinor, your clan citadel will be your clanÂ’s stronghold; your training ground; your home.
Working together, youÂ’ll gather the resources and materials needed to build and maintain your realm, with tiered progression. Enjoy the fruits of your labour as you proudly watch your Citadel grow to become ever grander.
A huge range of customisation options will make your clanÂ’s citadel truly unique; allowing you to reflect the values you hold dear and demonstrate to the world exactly what you and your clan stand for.
Your mighty fortress will not only be your home, but also a proving ground within which you and your clan-mates can gather resources and learn to work and fight as one, whether itÂ’s for future battles or just to prove that youÂ’re the greatest clan in the game!
Clan citadels will be a members only update, available to clans with five or more subscribing players, from July 26. Until then, check out this mouth-watering concept art to see just what is on, or above, the horizon.Concept Art
There's a wealth of information coming very soon, including more details of how youÂ’ll be able to customise your citadel and a few huge surprises. Watch the skies!
The RuneScape Team
Clan Citadels (Members Clan Areas):
Clan members may have hiscore tables, capes, insignia and clan chat channels, but they havenÂ’t had a place to call their own. That is about to change, as clan citadels, floating castles in the sky, can be seen on the horizon!
Gather five clanmates who have membership and you will be able to complete the portal ritual, gaining entry to your clanÂ’s very own citadel. Choose from four different layouts before deciding whether you want your citadel to be in glorious sunshine or perpetual night. Banners and flags fly the colours of your clan, and there are dozens of hotspots for you and your clan to make your own.
Of these hotspots, a maximum of seven are skill-related, allowing you and your clan to train skills together. Although the XP you receive is slightly lower than you would receive on the surface of RuneScape, skilling here will contribute to the maintenance of the citadel, allowing you to upgrade it from tier 1 to tier 7. As your citadel gets upgraded, youÂ’ll gain access to better customisation options and even more hotspots. Contribute enough to the weekly upkeep of the citadel and youÂ’ll find you have access to a clan ring, which gives you a temporary 1.5x multiplier in certain skill tasks about RuneScape.
Your clan can gather in many areas of your clan citadel – in meeting rooms, a senate, a party room – but the centrepiece is the clan battlefield. This offers you and your clan a large area to battle together or face-off against other clans, and a full-blown Battlefield Editor to create your own combat situations or minigames. We’ve had endless amounts of fun concocting clan wars between departments, elaborate mazes, obstacle courses, and twists on the traditional ‘capture the flag’ format, but we expect you to blow our ideas clear out of the sky. Get to grips with the locations, obstacles, enemies, enemy behaviours, win conditions and other tools, and then share your creation with your clan mates or other clans. The limits of what you create will only really be defined by your imagination.
Our graphics department have been busy adding over 4,000 new models and over 20,000 new animation frames to the game for Clan Citadels, making an environment that we are particularly proud of. More information about Clan Citadels will be revealed over the course of the month, with a clan blog on the 7th which will answer many of the questions you may have.
So, start growing your clans in anticipation of the Clan Citadels release!