Yes, it is active.
Velocity 2.0 is now available. According to The Central Repository for Maven, the 2.0 velocity-master artifact was last updated 14 October 2016.
The current (as of 8 May 2017) version is 2.1-SNAPSHOT indicating that work towards the next release is in progress.
Further, the git commit log show quite recent activity. The latest commit, at the time of writing, is from April 14 2017, and quite a few commits have been made in 2017.
Having said this, the Apache home page for Velocity doesn't seem to be kept up to date. There is no mention on the main page about the 2.0 release, however the Apache page for Velocity Engine 2.0 has its own (secret) page on the Apache site.