Looks like the RS1226+ is near release: RackStation RS1226+ | Synology Inc.
Datasheet available here: https://global.synologydownload.com/download/Document/Hardware/DataSheet/RackStation/26-year/RS1226RP%2B/enu/Synology_RS1226RP%2B_Data_Sheet_enu.pdf
Uses the same processor, has 2 2.5G NICs...