iOS 5 Compatible List
As famous iPhone hacking Dev-Team has already jail-broken iOS5 from Apple via Redsn0w & Sn0wBreze software an there are many updates being done on apps & tweak to make them iOS5 compatible. However while installing or updating tweaks or apps from cydia for iOS5 make sure it is compatible to iOS5. Otherwise non compatible tweaks might give problem’s & sometimes crash your iOS.
To check weather the any particular Cydia Tweak or App is compatible with iOS5 there is Live list being currently updated. You can see through the list of Apps or tweaks that are compatible to your phone iOS.
iOS 5 Compatibility LIST Link [ Compatibility List ]