Continuing the industry's transition into a post-UDID era, analytics outfit Flurry has updated its SDK, as well as providing additional guidance to developers.

SDK version 3.1.0 - which doesn't use UDIDs - is now available for download, as is 3.0.9, which does.

Flurry doesn't specific how it's replacing UDIDs, but it's rumoured to have switched to MAC addresses.

Don't panic

It recommends developers who are using older versions of the SDK (pre 3.0.3) to first update to 3.0.9 to avoid what it labels "some distortion of metrics such as New User counts".

More significantly, however, it confirms what we've been hearing from Apple, in that UDIDs can still be used as long as developers have an opt-in/out scheme in place.

"Recently, there have been many news stories and several developer inquiries related to Apple's rejection of the use of the iOS UDID," read the SDK release notes.

"It appears that these rejections are not based on an accelerated iOS UDID deprecation schedule, but on developers' failure to obtain end user consent for the collection and sharing of end user data. "

[source: Flurry]