The past week has witnessed Microsoft attempting to push information about its upcoming release of Windows Live Essentials. Wikikou reports that they've received information that will see a public beta of Windows Live Wave 4 next month.

Can this rumor be believed? Well Microsoft never reveal release dates for final products, never mind public betas. The fact that this build is expected at the end of next month is also questionable as typically beta cycles don't work to specific release dates (although as there are several products, this may be planned). Judging from previous Windows Live releases we can expect a public beta during the development cycle and it may well be the case one is due at the end of June. I do not however, believe Microsoft will release a public beta on the 21st, it's just too specific.

Source: Wikikou - Windows Live Messenger 2010 should come out next June 21 in Public BETA.