http://www.expats.cz/prague/article/prague-metro/prague-tram-line-changes-take-effect-from-august-28/?utm_source=facebook&utm_medium=facebook-post&utm_campaign=facebook-post&utm_content=prague-tram-line-changes-take-effect-from-august-28
as from Sunday there are major changes to the tram system in Prague however the main tourist tram route No22 will not have any changes . If you do intend to used the trams in the city please check the routes.I will be back in the city in October and will see how the new routes affect me as I stay in the suburbs of the city and report back.
Thanks for the heads up, I will be there next week. I was planning on parking my rental in one of the city garages & using the tram system.
hopefully things will be ok for you,I would not rely on Google maps for the correct info , but you never know they just might update things quickly.
http://www.dpp.cz/en/
this is the main website for transport info in Prague and you should be able to download their app.