Hello Bob,
This is really a personal decision. I think it depends on how close you guys are. If they will be able to support you in your recovery, all the better. Going from drinking nearly every day to not at all will be obvious to them, of course.
For me, I had to not be around people and places where any drinking was going on in the beginning. The temptation was too great and the stinkin thinkin that I could control my drinking since I had abstained for a week or a month, gave me a false sense of security.
Support is crucial to recovery. But, sometimes (not always and not with all people) admitting that we stopped drinking conjurs up all kinds of images - that we might become preachy; thou shalt not and you shalt not either, etc. - and people sometimes don't know how to anticipate any kind of change in us, even friends.
It really does depend on how well you know them and whether they will be there to support you or not. It is your business and your recovery.
We're certainly here for you, Bob.