Many of us had been hoping for a Google release to mark GMail's third birthday. While it looks like we may have been disappointed on that front there are still a couple of April releases to check out.
First off the rank, Google Related Links. It's a Google Labs project that puts a related content link box on your website based on context. It currently features up to three tabs -- related searches, news, and pages. One can only assume sponsored links won't be too far behind, but at this stage it's add free.
An finally, the Personalised Homepage has had an update with an improved directory for adding modules.
Not the killer upgrades we were hoping for (CL2 anyone?), more of a solid development release.