While the NAND-based MMCplus
format hasn't exactly reached SD
status in terms of universal acceptance and recognition, ATP
is unveiling a 4GB high capacity (HC) flavor to level up with its 4GB ProMax SDHC card. It sports a speed rating of 166x (25MB per second) and was designed to "maximize the performance of next generation digital devices requiring larger capacities and higher transfer rates" such as quick-shooting DSLRs. The card is also resistant to "water and extreme temperatures," but similar to shoving an SDHC
card into an SD-only reader, the HC format can't be utilized by earlier MMCplus readers. Unsurprisingly, pricing and release information isn't readily available, but you'll probably see these in memory shops soon.