Yn ogystal, mae contract gwreiddiol prosiect Cyflymu Cymru wedi cael ei ymestyn i gynnwys 42,000 o adeiladau ychwanegol, a nodwyd trwy broses adolygu'r farchnad agored, na chafodd eu cynnwys yn wreiddiol fel rhan o'r prosiect na'r ymarfer masnachol.
In addition, the Superfast Cymru project has also seen an extension to the original contract, to cover an additional 42,000 premises, identified through an open market review process, not originally scheduled for roll-out under the project or commercial exercise.