New Features

• [New Features][ESPnet2][TTS] Support g2p=none for text with phonemes #2551 by @kan-bayashi
• [New Features][ESPnet2][TTS] Add MCD evaluation script for ESPnet2-TTS #2554 by @kan-bayashi
• [New Features][ESPnet1][ST] Conformer End-to-End Speech Translation #2523 by @hirofumi0810

Bugfix

• [Bugfix][ESPnet1] CTC segmentation - package update #2566 by @lumaku
• [Bugfix][ASR][ESPnet1] fix bug about att_ws in multi-enc case #2549 by @lzm0706
• [Bugfix][ESPnet1] Conformer averaging model support for pytorch 1.6 #2604 by @siddalmia
• [Bugfix][ESPnet1][ASR] Set built-in CTC for asr_recog #2588 by @lumaku
• [Bugfix][ESPnet1][ASR][Installation] Transducer float16 loss bug fix #2496 by @GNroy

Refactoring

• [Refactoring][ESPnet1][ASR] Refactor BeamSearchTransducer and ErrorCalculatorTrans #2538 by @b-flo

Recipe

• [Recipe][ESPnet1][ASR] Alignment recipe for CSJ. #2531 by @jnishi
• [Recipe][ESPnet1][ASR] New Recipe for KsponSpeech (Korean spontaneous speech; 969 hours) #2555 by @jubang0219
• [Recipe][ESPnet1][ASR] Update TedLium3 conformer results #2600 by @LiChenda
• [Recipe][ESPnet1][ASR] Update VIVOS models #2574 by @b-flo
• [Recipe][ESPnet1][ASR] Update model link in Puebla-Nahuatl #2607 by @ftshijt
• [Recipe][ESPnet1][ASR] Update tedlium2 with conformer results #2599 by @Emrys365
• [Recipe][ESPnet1][ASR] update the JSUT recipe with conformer #2546 by @sw005320
• [Recipe][ESPnet2][ASR] Add CSJ conformer config #2560 by @kan-bayashi
• [Recipe][ESPnet2][ASR] Add CSJ conformer results #2552 by @kan-bayashi
• [Recipe][ESPnet2][ASR] Small changes for aishell config #2586 by @kamo-naoyuki
• [Recipe][ESPnet2][ASR] Update espnet2 AISHELL results #2580 by @kamo-naoyuki
• [Recipe][ESPnet2][ASR] update JSUT espnet2 with pre-trained models #2563 by @sw005320
• [Recipe][ESPnet2][TTS] Add JSSS recipe for ESPnet2-TTS #2558 by @kan-bayashi
• [Recipe][ESPnet2][TTS] Update ESPnet2 TTS result #2542 by @kan-bayashi

CI

• [CI][Documentation] Support espnet2/bin in sphinx doc. #2544 by @ShigekiKarita
• [CI][Installation][README] Add pytorch1.7.0 ci test #2605 by @kamo-naoyuki

Other

• [Installation] Install warpctc-pytorch wheel when torch version is 1.1 - 1.6 #2547 by @ysk24ok
• [Installation] Modified requirements: "dataclasses; python_version < '3.7'", #2541 by @kamo-naoyuki
• [Installation] Remove pip3 check in setup_python.sh #2567 by @ShigekiKarita

Acknowledgements

Special thanks to @Emrys365, @GNroy, @LiChenda, @ShigekiKarita, @b-flo, @ftshijt, @hirofumi0810, @jnishi, @jubang0219, @kamo-naoyuki, @kan-bayashi, @lumaku, @lzm0706, @siddalmia, @sw005320, @ysk24ok.