As others have already breathlessly announced at 12:00:01 EDT (or whatever time the embargo technically lifted*), Trijicon has officially launched a pair of new miniature red dot optics today.
There's the RMR HD, which is an open emitter sight that looks like the result of someone leaving an RMR and an SRO next to each other in the gun safe with the lights turned down low and some Barry White tunes playing. It sports a top-loading battery compartment, a larger window, a convenient sighting rib in the between the patented "ears" atop the housing, and a forward facing light sensor that can read light splashback from the target and adjust reticle brightness (if enabled). The reticle can be toggled back and forth between the plain dot and the dot surrounded by a 55 MOA donut-with-crosshairs.
The other is the long rumored enclosed-emitter optic from Trijicon, the RCR. It has a metric butt-ton of battery life (claimed to be six years at the middle brightness setting, but we won't know if that's true until 2029) and the same ruggedness the RMR is known for.
Both optics share the same mounting footprint as the existing RMR, the RCR via the use of clever capstan screws.
I'll be doing a more detailed review of each in the immediate future.
*Other people had obviously ignored the embargo and douchily leaked, but whatevs.