Thanks guys for this topic. I wasn't aware that 'TDP' is re-introduced by NetApp.
Interesting observation: (Did some testing)
According to this Public Bug info: TDP is re-enabled on 9.6P7 & 9.7P2:
1) I do not see 9.6P7 as valid available version for Download. The max patchable version is : 9.6P6. Don't know why P7 is mentioned in the BUG (Is P7 is under production ? I doubt)
2) 9.7P2 : I tested 'TDP' and it works! - So this information holds true.
BUGID:
https://mysupport.netapp.com/site/bugs-online/product/ONTAP/BURT/1291281
Regarding 7MTT: I tested 7MTT 3.3.1 with 9.7P2, and it error's out as un-supported. So that concludes, 7MTT is not supported anymore. Screenshot attached.
Request to NetApp : It is worth updating the BUG, and add a Note that 7MTT is not supported back. Also, please clarify on 9.6P7 version, cannot seem to see this version.
Thanks!