<update June 4>
Indeed at June 4 2012 Veeam released version 6.1 of Veeam Backup & Replication. See this post for more info
Veeam is close to the release of Veeam Backup & Replication v6.1 . My guess is v6.1 will be released at June 4 seeing the announcement at Veeam.com
Anton Gostev, product manager of Veeam posted the following information in the Veeam community forum last Sunday
I have finished drafting the What’s New document, and it came out about 4 pages long. Pretty decent for a minor release, considering these are just the new features alone (not including over a hundred of bug fixes). Looking at the list of the new features, roughly 30% is brand new functionality, and the rest are enhancements based on your v6 feedback. Overall, 6.1 is shaping up into the solid release – possibly, the best one we ever had.