The glittering awards ceremony will take place on 22 October at the Grosvenor House Hotel in London.
Telefonica UK's director of comms and reputation Nicola Green is chair of the judging panel and recently wrote a piece on the kind of entries she was looking forward to seeing.
Unlike other industry award schemes, judges will visit each of the shortlisted agencies in the Small, Mid-sized and Large Consultancy of the Year categories.
The newer categories include Best Integrated Campaign, which recognises PR-led campaigns by either in-house teams, full-service agencies or a combination of agencies from different marketing disciplines.
PRWeek will also recognise great work in fashion, arts, music and sport in the Culture, Media and Sport category.
PRWeek has compiled a league table of the most awarded companies from the 2010 to 2012 Awards. Gaining a space on the shortlist scores one point, a highly commended gives two points and a category win scores three points.
By this measure, Unity is the most awarded agency, followed by Mischief PR, Weber Shandwick, Ogilvy, Blue Rubicon and Brands2Life.
Last year, LOCOG won the high profile Campaign of the Year category for the London 2012 Olympics. The National Trust was awarded In-House Team of the Year and Blue Rubicon won Consultancy of the Year.
To enter visit the PRWeek Awards website.