I cannot upgrade to v14 until CDR is added back. As I did not see any official change log on features removed in v14, below is what I have seen so far. Feel free to contribute. This may help others who are planning to upgrade and aren't aware.
Unofficial list of features removed in v14:
1. CDR output
2. Wallboard
3. Music on Hold Audio Service
4. IIS only uses 80/443 (must use Abyss if legacy system uses 5000/5001)
5. Call Control API
6. (from tsukraw) Reports interface/Ability to grant users permissions to view reports.
**Ability to view reports on demand. Reports now are required to be emailed out cant just view them.
7. (from miko) ability to change the recording directory in Cloud edition
8. Reports no longer on-demand (only via email)
9. (from carolinainnovative) "support confirmed they changed the vm storage and transmission format. Unfortunately, that means the web gmail client in Chrome no longer plays them without downloading them first, and (at least) some android phones won't play them natively"