Update on RESTful Apps and Yealink phones?

Hi, we want to replace our phones with either Aastra 6867 or Yealink T46G to be able to use the RESTful apps and implement queuing. The Apps-Known Limitations page lists a couple of problems with Yealink phones due to firmware bugs but the last update was about year ago. Is there any update on this? what is the status of those bug reports with Yealink?

Also, what would you guys recommend between those 2 phones in your experience (quality, stability)?