New Features

• [New Features][ESPnet1][ESPnet2][ASR][README] The code for Emiru's real streaming Transformer #3614 by @D-Keqi
• [New Features][ESPnet1][MT][ST][Installation] Support sacreBLEU #3698 by @hirofumi0810
• [New Features][ESPnet2][ST] ESPNet2 speech translation #3587 by @ftshijt

Enhancement

• [Enhancement][ESPnet1][ASR] Fix e2e_asr_maskctc.py to make RTF computable #3634 by @eddiewng
• [Enhancement][ESPnet2][Installation][README] HuggingFace Upload support for ESPnet2 tasks [cont.] #3677 by @Fhrozen
• [Enhancement][ESPnet2][TTS][Installation] Add korean_jaso tokenizer and korean_cleaner #3588 by @windtoker

Bugfix

• [Bugfix][ESPnet1][ASR][RNNT] Fix quantization for Transducer #3616 by @b-flo
• [Bugfix][ESPnet2][ASR][Recipe] added download test set, small modifications for path of aishell #3663 by @teinhonglo
• [Bugfix][ESPnet2] Do stft with librosa when neither MKL nor CUDA is available. #3668 by @CTinRay
• [Bugfix][ESPnet2] [bug fixed] allow adding noise independently of rir, bug fixed in #3692 by @ranchlai
• [Bugfix][ESPnet2][Recipe] Create Symlinks for 1-channel/2-channel tracks in chime4 #3699 by @neillu23
• [Bugfix][ESPnet2][Recipe] Fix SWBD Data Prep Bug #3742 by @brianyan918

Recipe

• [Recipe][ESPnet1][ASR][MT][ST] Add CoVoST2 recipe #3720 by @hirofumi0810
• [Recipe][ESPnet2][ASR][README] MISP2021 E2E ASR Baseline #3738 by @neillu23
• [Recipe][ESPnet2][ASR][README] Wenetspeech #3686 by @pengchengguo
• [Recipe][ESPnet2][SLU] Add snips hubert feature training #3619 by @yuekaizhang
• [Recipe][ESPnet2][SLU] Make scoring part more general #3715 by @siddhu001
• [Recipe][ESPnet2][SLU][README] Add ESPnet-SLU Recipe: Google Speech Commands #3693 by @pyf98
• [Recipe][ESPnet2][SLU][README] Add an ESPnet2 recipe for the Grabo SLU dataset #3669 by @pyf98
• [Recipe][ESPnet2][SLU][README] CATSLU-MAPS: Added recipe #3685 by @SujaySKumar
• [Recipe][ESPnet2][SLU][README] ESPnet2 Japanese dialogue act classification recipe #3667 by @YushiUeda
• [Recipe][ESPnet2][SLU][README] Slurp SLU with bpe encoded transcripts #3674 by @siddhu001
• [Recipe][ESPnet2][SLU][README] Slurp entity classification #3739 by @siddhu001
• [Recipe][ESPnet2][SSL] Add eps in acc computation of HuBERT model #3713 by @simpleoier
• [Recipe][ESPnet2][TTS] Change the timing of srctexts creation #3734 by @kan-bayashi
• [Recipe][ESPnet2][TTS][README] update kss recipe with VITS configuration #3660 by @windtoker

Others

• [CI][ESPnet2][Installation] Fix tests in CI #3700 by @kan-bayashi
• [CI][ESPnet2][SLU][README] Add Hubert pretrained ASR in FSC SLU #3653 by @siddhu001
• [CI][Installation] Minor update for CI #3656 by @kan-bayashi
• [Documentation][ESPnet1][README][RNNT][Refactoring] Refactor custom Transducer build #3697 by @b-flo
• [Documentation][ESPnet2][README] Hugging Face support - Doc [cont.] #3709 by @Fhrozen
• [Installation] Update pyopenjtalk version #3733 by @kan-bayashi
• [README] Huggingface spaces ESPnet2-TTS web demo #3673 by @AK391
• [README][ESPnet2] Add Huggingface model documentation #3714 by @siddhu001
• [README][ESPnet2] Fix readme #3750 by @takenori-y

Acknowledgements

Special thanks to @AK391, @CTinRay, @D-Keqi, @Fhrozen, @SujaySKumar, @YushiUeda, @b-flo, @brianyan918, @eddiewng, @ftshijt, @hirofumi0810, @kan-bayashi, @neillu23, @pengchengguo, @pyf98, @ranchlai, @siddhu001, @simpleoier, @takenori-y, @teinhonglo, @windtoker, @yuekaizhang.