To be precise, the discontinuation of its 10th generation CPUs isn’t just limited to its Core series lineup, but also its Lakefield, Pentium, and Celeron lineup. The list of the affected CPUs is as below:

Intel Core i3-10110UIntel Core i3-10210UIntel Core i5-10210UIntel Core i5-10310UIntel Core i7-10510UIntel Core i7-10610UIntel Core i7-10710UIntel Core i7-10810UIntel Core i3-1005G1Intel Core i5-1035G1Intel Core i5-1035G4Intel Core i5-1035G7Intel Core i7-1065G7Intel Core i3-L13G4Intel Core i5-L16G7Intel Celeron 5205UIntel Celeron 5805Intel Celeron 6805

As to why Intel is discontinuing its Ice Lake-U series, it is probably due to the fact that its current 11th generation Tiger Lake-U CPU series is obviously faster and more powerful. Due to their generally higher base and boost clocks. On that note, manufacturers will still continue to accept orders for the listed CPUs until 22 October. After that, the last batch of these processors will then be sent off by 29 April 2022. Exceptions to the rule are the Core i7-10810U, Core i7-10610U, Core i5-10310U, and Celeron 5205U. Orders for these CPUs will still be fulfilled until 28 January 2022, and the final batch to be shipped out by 29 July the same year. (Source: Intel, Techspot)

Intel To Discontinue Production of 10th Generation Ice Lake Laptop CPUs - 81