Bell 206B EFIS
 

I see there's now an EASA STC for the Garmin G500H in the 206B. Is this likely to be at all popular?

Gama Aviation Newly released STC for the Garmin G500H EFIS

Don't see why not. Good for an IFR trainer and there's an industry in refurbishing old Jetbangers including the panel.

I think the keyword here is "EASA".

FAA STC SR02295LA held by Garmin already covers the following -

H2SW -- Bell Helicopter Textron Canada Limited -- 206A-1 (OH-58A)
H2SW -- Bell Helicopter Textron Canada Limited -- 206A
H2SW -- Bell Helicopter Textron Canada Limited -- 206B
H2SW -- Bell Helicopter Textron Canada Limited -- 206L-1
H2SW -- Bell Helicopter Textron Canada Limited -- 206L-3
H2SW -- Bell Helicopter Textron Canada Limited -- 206L-4
H2SW -- Bell Helicopter Textron Canada Limited -- 206L
H2SW -- Bell Helicopter Textron Canada Limited -- 407

under an AML.