Please note that USCIS announced on Friday, March 3rd that it will suspend Premium Processing for all H1B petitions filed on or after April 3rd, 2017. This is expected to last about 6 months. This will include all new H1B petitions filed towards the H1B cap for fiscal year 2018. USCIS has stated that this will enable them to move resources towards pending H1B petitions and reduce current processing times. You can read their full press release here.
In light of this, if you have any pending H1 petitions that you would like to convert to Premium Processing or any extensions to be filed under Premium Processing, etc., please let me know as soon as possible so they can be filed prior to April 3rd.