According to product listings on HP's support page, the Envy series may soon include two new versions — the Envy 4 and Envy 6. Size and system specs are unknown, so it's unclear whether or not the two models will fall alongside or replace certain models in the existing range, which include the the Envy 17, Envy 15, and Envy 14 Spectre. The page lists a total of 13 SKUs for the HP Envy 4 and 14 versions of the HP Envy 6, though none match the naming conventions utilized by existing models in the series. It's possible that the Envy 4 and Envy 6 will adhere to Intel's ultrabook specifications, like the Envy 14 Spectre, and that the 4 and 6 are in reference to 14- and 15.6-inch screen sizes.