There is usually a final review with all IVAs, but, often a review is conducted as part of the offer process and need not be repeated. It depends on how diligent your IP wishes to be and how far past was the last formal review.
Best be prepared for one anyway. It will focus on income over the past year, rather than expenditure.
My opinions are merely that .. opinions based on experience. Always seek professional advice.
IVA Completed 23rd July 2013 .... C.C. 10th January 2014 http://foggy.blogs.iva.co.uk