not just flannels have changed- fabric widths can be anywhere from 30" wide up to 44" for (normal) wides are considered 54"-60" or the very wide 108"-120"
i have shopped in regular quilt shops who have fabric on the bolt that is only 32" wide- when i asked about it i was told- different manufacturers process different widths- it is always a good idea to check- and if a fabric is only 32" wide a fq is going to measure 16"x18"! so be prepared for that too.