Two new features have recently made it into Apollo.
The first one is gravatar support. Gravatars are global avatars that can be created by anybody on www.gravatar.com. Using gravatars is very simple: you create one, and associate it with your email address. Then, within Apollo, you can go to Settings > Account and then tick the box "Use Gravatar" in the Picture section:
We have also made it possible for you to merge two contacts. This is helpful if you have two entries for the same person. An important feature here is that notes for those contacts will also be merged.
These features are not as important as many others, but they are useful nevertheless.