I just bough a UPD-203 and UPD-205. Oppo has stated that it will keep providing firmware fixes as needed and will maintain hardware support for a couple of years to cover the warranties.
Even when exiting, they are a class outfit.
In terms or replacement, there is a new Panasonic UHD player the flag-ship (I can't recall the name) has high-quality analog outs and DV (Dolby Vision) support. However, they do not supper SACD and DVD-Audio (If that matters to you). Sony uses a similar SOC to Oppo and supports SACD.
IMO, DV is worth it today.
- Rich