On Wed, 2 Aug 2017, Idris Samawi Hamid ادريس سماوي حامد wrote:

> On Wed, 02 Aug 2017 14:34:25 -0600, Hans Hagen <pragma@wxs.nl> wrote:
>
>> On 8/2/2017 10:21 PM, Idris Samawi Hamid ادريس سماوي حامد wrote:
>> > Dear gang,
>> >  There appears to be something awry with type-imp-cambria.mkiv or 
>> >  type-imp-dejavu.mkiv. Consider the following:
>> >  =======
>> > \setupbodyfont
>> >    [cambria,12pt]
>> > \starttext
>> > Test % {\it Test} {\bf Test} {\bi Test}
>> > \stoptext
>> > =======
>> >  This produces a pdf with Cambria Italic instead of Cambria Regular. 
>> >  Uncommenting the other three options produces the expected results.
>> >  Is this a bug or am I missing something? Awaiting your advice!
>> it's ok here; it could depend on the cambria on your machine
>
> Cambria Regular : cambria.ttc
> Cambria Italic  : cambriai.ttf
>
> Inspection shows cambria.ttc is indeed regular.
>
> The log file says
> :
> mkiv lua stats  > loaded fonts: 2 files: cambria.ttc, cambriai.ttf
>
> Updating to "current version: 2017.08.02 18:59" and purging the cache doesn't 
> help

Not sure if it helps, but this is worth a try (note the force key):

mtxrun --script fonts --reload --force

Aditya