[Seaside] How to get current seaside?

[itsme213]

I am using the seaside image 2.6xxx as published on seaside.st.

I've noticed some bugs in that image (halo icons, scriptaculous examples 
fail on "show source", ...) so I thought I should work with the most recent 
release from SqueakMap, but my squeakmap package loader just shows "Seaside 
(->2.5)".

Is there a more current version of Seaside? What is a good way to stay more 
current? To figure out which versions of what to install?

Thanks for any pointers.