European Launch ?

Google IO would be an educated guess

As some of you may have understood Google has lately been having major problems with is Glass updates. This has made them issue a lot of replacements to customers within warranty. This has made glasses with CE markings to appear as replacements.

An educated guess would be that this huge requirements for replacement glasses has made Google dip into a stockpile which was not intended to be public just yet.

The big question of cause is if the explorer program is expanding to Europe or if this is also a commercial launch for a bigger market.

My belief is that its probably an expansion of the explorer program for now. Google may have some really improved glasses more suitable for the mass masked which may be launched later this year. At least my opinion is that the current models are not ready for mass adoption yet.