Designated as PNV J20214234+310396 at this early stage, this possible Nova was discovered by Koichi Nishiyama and Fujio Kabashima (Japan) on 2014 March 31.7899 UT at 10.9 mag (CCD, unfiltered) at coordinates:
R.A. 20h21m42.34s Decl. +31°03’29.6″ (J2000.0)
An early Spectrum obtained by Gianluca Masi et al can be seen here…
I finally managed to get an image of this possible nova this morning after days of grey fug in the south east. A quick reduction using CMC-14 gives V=10.7 (47 refs, 0.04mag). There is a 13th mag star (CMC-14 202142.3+310318) just south which will be troublesome as the nova fades.