Sony opening E-mount specifications to lens makers on April 1st
With CP+ opening its doors on the 9th (Japanese time), the announcements are going to pick up steam, so hold on to your browsers!
In a very welcome sign of more openness and interoperability, beginning April 1st (hopefully not a joke, why didn't they pick a different date?) Sony will release the E-mount specifications (for free) to any interested lens and lens-mount manufacturers!
According to the press release, Zeiss, Cosina, Sigma and Tamron are jumping aboard and each have issued a mini-statement in support of this move.
This will likely put more pressure on Canon and Nikon to reveal their mirrorless plans - or at least do something to freeze the market. While it is true that third-party lens manufacturers have been making lenses for the traditional SLR mounts for years (mostly reverse-engineering), Sony's rolling of the welcome E-mount mat is certainly not going to be lost on the lens manufacturers and photographers alike.
Perhaps Sony is borrowing a page from Google and is trying to turn the E-mount into the Android of mirrorless systems?
PS: Memo to manufacturers - Please do not make announcements or set deadlines for April 1st!