  The Wide-field Infrared Survey Explorer (WISE) has detected the close binary
brown dwarf system CFBDSIR 1458+1013AB as WISEP J145829.35+101341.8 with a
combined magnitude at 4.6 microns of W2 = 15.488+/-0.147. This allows a
comparison with another "coolest" brown dwarf candidate WD 0806-661B that has
been observed at 4.5 microns with [4.5] = 16.75+/-0.05. Here we use the WISE
data to show that 1458+1013B is almost certainly warmer and more luminous than
WD 0806-661B.
