Well it looks like this time around Game FRreak is going be doing a better job with the HG/SS Pokedex, then they did with the FR/LG Dex... -_-;

The following is what I think might happen going by what we know about the dex so far...

#001 Chikorita
#002 Bayleef
#003 Meganium
#004 Cyndaquil
#005 Quilava
#006 Typhlosion
#007 Totodile
#008 Croconaw
#009 Feraligatr
#010 Pidgey
#011 Pidgeotto
#012 Pidgeot
#013 Spearow
#014 Fearow
#015 Hoothoot
#016 Noctowl
#017 Sentret
#018 Furret
#019 Azurill
#020 Marill
#021 Azumarill
#022 Pichu
#023 Pikachu
#024 Raichu
#025 Caterpie
#026 Metapod
#027 Butterfree
#027 Weedle
#028 Kakuna
#029 Beedrill
#030 Ledyba
#031 Ledian
#032 Spinarak
#033 Ariados
#034 Geodude
#035 Graveler
#036 Golem
#037 Zubat
#038 Golbat
#039 Crobat
#040 Cleffa
#041 Clefairy
#042 Clefable
#043 Igglybuff
#044 Jigglypuff
#045 Wigglytuff
#046 Togepi
#047 Togetic
#048 Sandshrew
#049 Sandslash
#050 Ekans
#051 Arbok
#052 Dunsparce
#053 Mareep
#054 Flaaffy
#055 Ampharos
#056 Wooper
#057 Quagsire
#058 Gastly
#059 Haunter
#060 Gengar
#061 Unown
#062 Onix
#063 Steelix
#064 Bellsprout
#065 Weepinbell
#066 Victreebel
#067 Hoppip
#068 Skiploom
#069 Jumpluff
#070 Paras
#071 Parasect
#072 Poliwag
#073 Poliwhirl
#074 Poliwrath
#075 Politoed
#076 Magikarp
#077 Gyarados
#078 Goldeen
#079 Seaking
#080 Slowpoke
#081 Slowbro
#082 Slowking
#083 Oddish
#084 Gloom
#085 Vileplume
#086 Bellossom
#087 Abra
#088 Kadabra
#089 Alakazam
#090 Ditto
#091 Pineco
#092 Forretress
#093 Nidoran♀
#094 Nidorina
#095 Nidoqueen
#096 Nidoran♂
#097 Nidorino
#098 Nidoking
#099 Yanma
#100 Yanmega
#101 Sunkern
#102 Sunflora
#103 Exeggcute
#104 Exeggutor
#105 Bonsly
#106 Sudowoodo
#107 Wynaut
#108 Wobbuffet
#109 Venonat
#110 Venomoth
#111 Scyther
#112 Scizor
#113 Pinsir
#114 Heracross
#115 Koffing
#116 Weezing
#117 Grimer
#118 Muk
#119 Magnemite
#120 Magneton
#121 Voltorb
#122 Electrode
#123 Aipom
#124 Ambipom
#125 Snubbull
#126 Granbull
#127 Vulpix
#128 Ninetales
#129 Growlithe
#130 Arcanine
#131 Stantler
#132 Diglett
#133 Dugtrio
#134 Mankey
#135 Primeape
#136 Meowth
#136 Persian
#137 Psyduck
#138 Golduck
#139 Tyrogue
#140 Hitmonlee
#141 Hitmonchan
#142 Hitmontop
#143 Girafarig
#144 Tauros
#145 Miltank
#146 Magby
#147 Magmar
#148 Magmortar
#149 Smoochum
#150 Jynx
#151 Elekid
#152 Electabuzz
#153 Electivire
#154 Mime Jr.
#155 Mr. Mime
#156 Smeargle
#157 Farfetch'd
#158 Natu
#159 Xatu
#160 Qwilfish
#161 Tentacool
#162 Tentacruel
#163 Krabby
#164 Kingler
#165 Shuckle
#166 Staryu
#167 Starmie
#168 Shellder
#169 Cloyster
#170 Corsola
#171 Remoraid
#172 Octillery
#173 Chinchou
#174 Lanturn
#175 Seel
#176 Dewgong
#177 Lickitung
#178 Lickilicky
#179 Tangela
#180 Tangrowth
#181 Eevee
#182 Vaporeon
#183 Jolteon
#184 Flareon
#185 Espeon
#186 Umbreon
#187 Leafeon
#188 Glaceon
#189 Horsea
#190 Seadra
#191 Kingdra
#192 Gligar
#193 Gliscor
#194 Delibird
#195 Swinub
#196 Piloswine
#197 Mamoswine
#198 Teddiursa
#199 Ursaring
#200 Phanpy
#201 Donphan
#202 Mantyke
#203 Mantine
#204 Skarmory
#205 Doduo
#206 Dodrio
#207 Ponyta
#208 Rapidash
#209 Cubone
#210 Marowak
#211 Kangaskhan
#212 Rhyhorn
#213 Rhydon
#214 Rhyperior
#215 Murkrow
#217 Houndour
#218 Houndoom
#219 Slugma
#220 Magcargo
#221 Sneasel
#222 Weavile
#223 Misdreavus
#224 Lapras
#225 Porygon
#226 Porygon2
#227 Chansey
#228 Blissey
#229 Omanyte
#230 Omastar
#231 Kabuto
#232 Kabutops
#233 Aerodactyl
#234 Munchlax
#234 Snorlax
#235 Articuno
#236 Zapdos
#237 Moltres
#238 Raikou
#239 Entei
#240 Suicune
#241 Dratini
#242 Dragonair
#243 Dragonite
#244 Larvitar
#245 Pupitar
#246 Tyranitar
#249 Lugia
#250 Ho-Oh
#251 Celebi

~Charles Legend