CFexpress is a standard for removable media cards proposed by the CompactFlash Association (CFA).

[1] One of the goals is to unify the ecosystem of removable storage by being compatible with standards already widely adopted, such as PCIe and NVMe.

Delkin's 512 GB Power CFexpress Type B card was reviewed along with several others in the early fall of 2020.

The article mentioned a firmware upgrade to address compatibility with the Canon EOS R5 camera in late September 2020.

[11] ProGrade Digital announced it would begin production and sale of CFexpress cards in 2018 with the Type-B form-factor (the same as XQD).

However, in late October 2017 a Lexar employee stated to Nikon Rumors:CFExpress is essentially the next revision of XQD, and there should be full backward compatibility with XQD, and that getting D4/D5/500/D850’s to work with CFE cards should be a simple software patch.

[34] On 24 October 2019, Canon announced the development of the EOS-1D X Mark III with dual CFexpress slots.

[37] On 20 April 2020, Canon announced that the EOS R5, a hybrid mirrorless camera, will support CFexpress and SD UHS-II.

[38] On 28 July 2020, Sony announced the α7S III, a mirrorless camera that will support dual CFexpress Type A and SD cards.

[39] On 26 January 2021, Sony announced the α1, a mirrorless camera that will support dual CFexpress Type A and SD cards.

[40] On 23 February 2021, Sony announced the FX3, a mirrorless camera that will support dual CFexpress Type A and SD cards.

[44] On 21 October 2021, Sony announced the α7 IV, a mirrorless camera that will support single CFexpress Type A and SD cards.