I'm looking at a Pro 29 frame that has a 44mm headtube, 73mm threaded BB, and a claimed 2.3" rear tire clearance...

Lynskey Pro 29 Hardtail MTB Titanium Frame Size Medium 33191 | eBay

Can anyone tell me what year this frame is?

Also, can anyone that has this frame confirm that 2.3" is as large as you can go in the rear?