Raspberry Pi have released the small Pico 2 as an improvement to the original Pico: https://www.raspberrypi.com/news/raspberry-pi-pico-2-our-new-5-microcontroller-board-on-sale-now/ [raspberrypi.com].
The small single board computer looks virtually unchanged from its predecessor. All improvement is in a new microcontroller unit, the RP2350, which replaces the old RP2040. Most notable features are twice the memory, low power sleep options, and two added Risc-V cores. The two ARM cores are still there, but upgraded to Cortex-M33 from M0+.
Unlike the RP2040, the new MCU is available in different packages, with more pins and flash memory in-package. Top of the line will be the RP2354B with 80 pins and 2MB integrated flash.