https://screenrant.com/why-doctor-who-new-sonic-screwdriver-look-like-matt-smith/

Doctor Who has revealed a brand new sonic screwdriver for David Tennant's Fourteenth Doctor, drawing comparisons with Matt Smith's Eleventh Doctor.

Doctor Who's New Sonic Screwdriver Calls Back to These Past Doctors (https://www.cbr.com/doctor-who-sonic-screwdriver-fourteenth-doctor/)

The Fourteenth Doctor's sonic screwdriver embraces the Doctor Who gadget's evolution in recent years, reflecting the Doctor's growth as a character.