How will this affect external auditing on construction companies?

ED 2011/6

http://www.ifrs.org/nr/rdonlyres/f88d0071-39a5-41d8-9374-a6355927f459/0/revrec_edii_standard.pdf

IAS 11 (Construction Contracts)

http://ec.europa.eu/internal_market/accounting/docs/consolidated/ias11_en.pdf
http://www.iasplus.com/en/standards/standard10