Indeed, but I just found that when I install Nik5 first and Nik6 afterwards, that the apps coexist in their respective folders, but that DPL only shows the Nik6 apps.
Lightroom shows both versions though, albeit in a somehow unhappy order:
…and a typo (Nik 6 Vivez, already reported to @StevenL)
… and HDR missing:
Update: HDR is in Lightroom’s export menu. Unexpected, for me at least.
@mrcrustacean helped me find it.
Did I read the manual? No 