Interestingly, the site also reports Rocket Lake-S is now expected to appear in Q2 2021. This seems to indicate a delay as Rocket Lake-S was planned for March 2021 availability.
Rocket Lake-S will be the last series of 14nm desktop processors from Intel, these 11th Gen Core CPUs pack new cores with higher IPC and feature Xe-based integrated graphics. Along with the release of Rocket Lake-S, we'll see 500-series motherboards. There are some rumors that these boards may hit the market later this month.
The Z590 covers the high-end and the low-end H510 is a relatively minor update versus the existing H410. The B560 on the other hand is will finally allow memory overclocking again in the mainstream segment, which is a welcome change:
There are far more changes in the B560 chipset compared to its predecessor though. For the first time, Intel is allowing memory overclocking on this mid-range chipset. The board is also listed with RAID support and with 1×16 + 1×4 PCI Gen3.0 support. Of course, the 500 series also support PCI Gen4.0 but those lanes are exclusively handled by the CPU, not the chipset.