Speed up of this train has happened. But notification is still not given. AFAIK 12178:- MTJ 05.10; 55 AGC 06.00/05; 173 GWL 07.55/08.00; 271 JHS 09.35/45; 532 CKTD 14.15/20; 562 MKP 14.55/15.05; 655 PCOI 16.50/17.05; 799 DDU 19.35/50; 1004 GAYA 23.05; 1203.7 DHN 02.10/20; 1262 ASN 03.18/28; 1304.1 DGR 04.07/09; 1367.5 BWN 05.08/10; 1462 HWH 06.50| 1462 kms in 25 hrs 40 mins @ 57 kph. 12177:- HWH 17.40; BWN 18.56/58; DGR 19.52/54; ASN 20.33/43; DHN 21.41/51; GAYA 01.10; DDU 04.15/30; PCOI 07.00/10; MKP 08.50/55; CKTD 09.30/35; JHS 14.05/20; GWL 16.05/10; AGC 18.20/25; MTJ 19.20| 1462 kms in 25 hrs 40 mins @ 57 kph. 12177 speed up by 20 mins & 12178 speed up by 15 mins.
Plz...
more... wait for official notification.