It is very common for "gadgets" to be discontinued to make room for new models. On the other hand, some products such as IDA-8 are so good in their price range that it stays on the market for many years.
WR-1 doesn't provide AirPlay 2 support, and the streaming module can not support Amazon HD. The device and app will continue to be supported.
WR-2 (MSRP $549( is coming out by the end of October.
For your 10 series, you might want to consider Stream-9. Stream Mini will work fine, even though it is not as good as Stream-9. Certainly, WR-2 is a good match too.