FamilyTree DNA's sale is $100 off the Big Y test which is regularly $575. Use the coupon code DNADayBigY which is valid from 12:00 a.m. April 25th through 11:59 p.m. April 30th. Remember there is an additional charge for shipping and handling.
This is not what most people were hoping for in terms of a sale but the email announcing this sale mentioned, "Family Tree DNA is looking forward to offering many exciting deals beginning Summer 2015."
Most people are looking for an autosomal test (FamilyFinder), an mtDNA test, or one of the smaller Y-DNA tests. Hopefully one or all of these will be included in these deals "beginning Summer 2015."
As we learn of any DNA sales from any company, we'll let you know.