Bip39 release date https://penzu.com/p/2ea6922b70254307 Although it utilizes BIP32 process you are able to continue to import BIP39 seeds into Electrum wallet. Also other than BIp32 There's BIP44 Model which some wallet use with the technology of seeds. BIP39 improves wallet protection by generating backups reliable, uncomplicated, and resistant to glitches. https://webookmarks.com/story6280731/bip39-balance-checker-5-essential-elements-for-bip39-word-list-pdf-https-www-youtube-com-channel-ucupxfytj0fb78sq55hu6ocw