A 3DMark results database entry confirmed that the 10th generation Core i5 desktop processor will indeed feature HyperThreading (HTT). Based on the 14 nm "Comet Lake" silicon, the next-gen Core i5 processor will be 6-core/12-thread. Besides HTT, the processors will feature higher clock-speeds than their 9th generation counterparts. In the 3DMark validation, a Core i5-10600 processor is referenced, featuring 6 cores and 12 logical processors. The chip has a nominal clock-speed of 3.30 GHz in its name string (a 200 MHz increment over the i5-9600), although its Turbo Boost frequency hasn't been detected properly by SystemInfo.
It's possible that the maximum Turbo Boost will be a similar 100-200 MHz gain over the 4.60 GHz of the i5-9600. It remains to be seen what L3 cache amount Intel gives these chips. The 6-core/12-thread Core i7-8700 has 12 MB, or an additional 512 KB L3 slice per core, to cope with the HTT overhead, although there have been exceptions to this rule in the company's mobile processor lineup. Intel is expected to debut its 10th generation Core "Comet Lake" processor series alongside the Z490 Express chipset in April 2020.