Within the custom ROM community the biggest heartache caused by Lollipop’s switch from Dalvik to Art was the loss of the incredibly popular Xposed framework. The framework allows developers to create modules which change the way your (rooted) Android device works and looks, and was an all in one solution for modding that took the community by storm. Xposed was created by rovo89 and Tungstwenty and the developers are no doubt working on porting the framework to Lollipop.
Former VillainROM ROM developer HomerSP with a little help from Villain lead Nathan Russell have put together their own framework to work with Lollipop which is currently codenamed ElPollo. Development is still at an early stage but the framework does install and a couple of test modules are also working.
As mentioned so far only one useful module has been created along with a test module, but once HomerSP is happy with progress hopefully module developers will get on board and create many more.
Image Credit: XDA Developers